Question

1. Complex algebra problems. You can check your answer with
Matlab: *real, imag, abs, angle phase, conj.* You are given:
A = 1+2j ; B = 2+1j

**a. Find A*B, A/B, A^2 abs(A) and abs(B). Answers should
be simplified in (a+bj) form.**

**b. B in polar form (i.e. magnitude and angle in
degree)**

**c. Find exp(A) in polar and rectangular form. Hint use
Euler formula.**

2. Matrix operation problems. Use Matlab: A = [1 2 3; 4 5 6; 7 8 9], B = [1 1; 2 2; 3 3], C = [A B], D = zeros(3) and E = eye(3).

**a. Find A*B, A*C, A*E, and A. *E (Notice " .* "
operator)**

**b. Find inv(A)**

Answer #1

1.

2,3

What is the MATLAB code used to solve the following
equations?
a. Express (2 + 3j)*(1-5j)* in recantgular form
b. Express e^(-jpi/7) - pi/7 in recantgular form
c. Express -2e^(-j90 degrees) in recantgular form
d. Express 2 - sqrt-2 in polar form
e. Find the magnitude of e^e^(2-j)

Part 2: Solve the following problems in
MATLAB
1. Fill in the function E = myElim(A, r_entry, r_pivot, c) to
create an m by m
elimination matrix ??. Remember that
an elimination matrix looks like an identity matrix with one extra
entry of ?? in row r_entry and column r_pivot.
2. Fill in the function M = myMult(A, c_pivot) to create an m by
m multiplier matrix ??. Remember that a multiplier matrix looks
like an identity matrix with the...

1. Write a MATLAB function to determine the discrete-time
Fourier Transform (H(?)) of the following sequence. Plot its
magnitude and phase. You can use the dtft command and use the abs,
angle and plot commands to plot the results.
x(n) = {4, 3, 2, 1, 2, 3, 4}.
2. Analytically determine H(z) and plot its magnitude and phase
for the following system using freqz.
y(n) = 2x(n) + x(n ? 1) ? 0.25y(n ? 1) + 0.25y(n ? 2).
3....

Below are three different codes in Matlab, please copy those
your matlab and answer the following questions:
Thank you for your help!!!!
1.1 Baseband Signal
a) Plot time versus baseband signal (m_sig).
b) Plot freq versus baseband signal spectrum (M_fre).
1.2 Amplitude Modulation – Suppressed Carrier.
a) Plot time versus the DSB-SC signal (s_dsb).
b) Plot freq versus the DSB-SC signal spectrum (S_dsb).
1.3 Coherent Demodulation
a) Plot freq versus the pre-filtered signal (S_dem).
b) Plot freq versus the post-filtered...

Let A be a real matrix of 7 × 5 format. Answer the questions
following:
(1) Can the homogeneous system AX = 0 have a non-trivial solution?
(2) Can the columns of A form a generating system of R^7?
(3) Can the columns of A be linearly independent in R^7?
A. Yes, No, No D. No, No, Yes
B. Yes, Yes, Yes E. No, No, No
C. Yes, No, Yes F. No, Yes, Yes

You can use graphs or simple algebra to answer this
question; either way, be sure
to show all of your work and/or explain your
reasoning.
Two firms can reduce emissions of a pollutant at the
following marginal costs:
MC1 = $3 q1
MC2 = $1 q2
where q1 and q2 are, respectively, the amount of
emissions reduced by the first
and second firms. Total pollution-control cost functions
for the two firms are
Respectively:
TC1 = $100 + $60
(q1)2
TC2...

Please explain how so that I can get it
Both problems please and problem 1 only for part (e). Problem2
only part(c).
P1)The expression x = 7.70
cos(2.50πt + π/2) describes the position
of an object as a function of time, with x in centimeters
and t in seconds. What are the following?
(a) frequency
1.25Hz
(b) period
0.8 s
(c) amplitude
7.70 cm
(d) initial phase of the object's motion
1.57 rad
(e) position of the particle at t...

1. Do you check your phone or use technology right before you go
to bed? If so, chances are that you are not alone. A recent news
report claims that 60% of adults use some kind of technology right
before they go to bed at night. Believing that this claimed value
is too low, a researcher surveys a random sample of 200 adults and
finds that 71% use some kind of right before they go to bed. If a
hypothesis...

1. Given β = XT 1×nAn×nXn×1, show that the gradient of β with
respect to X has the following form: ∇β = X T (A + A T ). Also,
simplify the above result when A is symmetric. (Hint: β can be
written as Pn j=1 Pn i=1 aijxixj ).
2. In this problem, we consider a probabilistic view of linear
regression y (i) = θ T x (i)+ (i) , i = 1, . . . , n, which...

Can you please check my answers and tell me if they are
correct? thanks
8. Write the ionic equation for dissolution and the solubility
product (Ksp) expression for each of the following slightly soluble
ionic compounds:
(a) PbCl2
PbCl2(s) --> Pb2+(aq) +
2Cl-(aq)
Ksp
= [Pb2+][Cl-]2
(b) Ag2S
Ag2S(s) --> 2Ag+(aq)
+
S2-(aq) Ksp
=[Ag+]2[S2-]
(c) Sr3(PO4)2 Sr3(PO4)2(s)
--> 3Sr2+(aq) +
2PO43-(aq) Ksp
=[Sr2+]3[PO43-]2
(d) SrSO4 SrSO4(s)
--> Sr2+(aq) +
SO42-(aq) Ksp
=[Sr2+][SO42-]
14. Assuming that no equilibria other than dissolution are
involved,...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 56 seconds ago

asked 2 minutes ago

asked 3 minutes ago

asked 5 minutes ago

asked 8 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 15 minutes ago

asked 15 minutes ago

asked 15 minutes ago

asked 17 minutes ago